DetailsDeveloped for quick training runs or race day, the Speed7 has come out on top among its peers in several performance reviews, among them Runner’s World 2017 Fall Shoe Guide, who deemed it ”the lightest and most flexible shoe in this guide”. The dark graphic patched pattern on the upper glows in a rainbow of colors when a car’s headlights hit them – run safe run fast! A new updated tongue gives it a more comfortable fit and reduced weight! The Speed7 has been based on a light version of Salming’s Natural Running Support System, which lets every runner to find and stay in their natural running stride. 62/75° technology assures that the shoe bends in exactly the right places.